Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ae9f4e681a2988244d192fffffb2e3085628c2b25485016c5fc585f6adf122ff' 
  AND token = '4sSN9PKuJPOsG6oAYOKtq+3WhelnKMLwaIo1S7535Ek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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