Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44c792e07d9f6d2f914c1763d3c4ecba0109e68d286020ab69d4e98e7d5bd727' 
  AND token = 'W0ol23aPhjTu48paEVAm+Qu76M2erKZsE9A2Ij7yzdU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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