Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32939bd6355aa3a8cd22d32039195240ab87af625b1e31ee27fbea90426700c9' 
  AND token = '2j49tOfitWwUltNCls8ZKMfMh8yO458s7s1zTWjW7OA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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