Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34f95ae25b5cfe8f0873852d69c800afa775e89cfde0f2b61af3d3ff84074458' 
  AND token = 'kgeQEGPqx0YI+R1PUwGzwS8WFw9syvH/YtOwaH5Q99E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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