Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '882910f28a1e9fcec26392dd273f88e206946db35f3f41d1e5eb74b900746c9d' 
  AND token = 'hP521fFhO9LQuIazAQIPwlL6vIMHLKWpEqOU+dBWSdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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