Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04caee5a3e134143b27dfce5cd428cfc3451bc234420386db53e2423a5fb040b' 
  AND token = 'ZVjJIemezZB+Dy55NqITx+dAihHy1e2KptmD3fyK2yE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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