Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb63b1a1ae0ffbba6958296a9e461ff04c25021d884025559565042673cdae16' 
  AND token = 'X4lu95ERsckyh6A2z+p4L/ixxRJfqCh6oiGL4A8nJ54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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