Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1f3ff016cabea55ada5cda0ab1507c07010ae5b7569e7e9561a0f87c6904416' 
  AND token = 'EGRvFKxHIwSXJ/gKn8zkR8spLLQdgxzOQgkbmwBhMfk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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