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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9dd834cf970e8c6acc73f4e85a84694ca57fd9377b2ccf80eeaaebefa1db8cda' 
  AND token = '49Iw2XuJ0QulK9oyCv9we8MrepMiAINc4lOUWnzzNX8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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