Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cf72c4c76cfc633ec623cc2dab3b2c5c60436ac8c72bb903526d050586555e3' 
  AND token = 'TNov8sDisr5NNiGvv4TXS3+JxNFbevueHbwe1MmAa44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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