Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '37cf2cc9908e7d28c5def495fb945a75e29bdefbdd8c65f86e53f05fbfa2b09e' 
  AND token = 'B6jHoBXVj3uKyBO+xB5eBZDFSO4UvysCHkr16rayN6g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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