Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '362393379fb4d670bf180a14456ae68bd8ab9f817b90a54ff4e74bf122af6685' 
  AND token = 'vPZL9so0Nqy2a1ULk2i4jLStaeWuUn7R69IF4+8AJkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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