Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f038260c7aafc15f4409e690f6bebcfd498750681efc7b89b4559c277752eb4a' 
  AND token = '8CP+PlGtLEAMmiayHZGX21nW6lhsUpl4vqxed9bdKr4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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