Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '885df5116324f3c490d2ad260dbfabc791227fa5369ae993d4d919cec6f45878' 
  AND token = 'Xz6JKW5OZY5p2gx4R56lOvCMZ5t8V5H9oY3q/y4dxAk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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