Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29c68bec8f8a171a7bb2688efbeff158a38ceedf3ec86660ca2fcb28a4bf6753' 
  AND token = 'iHQnb8aE+f0QOh2a6MguhFUslFmOgplfjX8uClvQC1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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