Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c69303c6f15043fef6991afb39e82d5b126c53c940cbdb2191aca0c393550ef0' 
  AND token = 'ruy1J1oxZut/BjPFtVgpgwPBcZ8wVWxwhNaXNlw45ss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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