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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd01ad851a1febfc0ad4eb2802ad44b45c1fdfc90bb66ea3cefb4d22e7a469bc0' 
  AND token = 'wMQs4/Fp4bu/6DAeJaf7FfoZ6G1q7NPVzjEoK9iQh9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}