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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd167fac9ba3ea66a84463186436b900062fc5afdce594782d89dc8b8782a0d87' 
  AND token = 'F0R3/Rdh0cJdenvdEivZhYbSNrEaRAD+jCKVJ1plRdM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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