Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '570c760907bbad23bdfd0756c1862cf5c26207363217eebe2fa8c1fa50764154' 
  AND token = 'z1dj+M34mcD5d1IptVAaOBABcKH28D2qeAm5RHTcew0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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