Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '897b97235ea2d1d38f33bd7250209a2578284e5023658f21a6cfee04b5c58fd0' 
  AND token = 'sFtWyE6fm2EMeIo6MM47atZmeCF67fE6FfocK1ZgY8w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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