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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4abe22ac02ff5b00e666ec312b153eb08a0fa0cc5ce655e199e830a4f9401d0b' 
  AND token = 'VP7En6coUwGMfbStmDsaRHWokwqZ4DMw7mj5N14uP5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}