Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '467afba68b98c8fb830d43a6c345043891080b88d6da73fdd696346637f3f6ec' 
  AND token = 'VfEsk1RFjPOcAMhOerFa5gu3AcAFJ68vJ/bu2UG07do=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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