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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06097496426ab5d6d7ef8ab8c88475fcd4c31861bd592346813f9d0b2320a00f' 
  AND token = 'DaG8S7Q3pQwTcEz6hHk4GIr9K2BVpAfCY9c6lb1t22o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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