Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '91f94945a5c0c6fa6693a182925daee8e7af965e6fd3c752305e6389e2da55f7' 
  AND token = 'zGDNZrir9LNr5qL1UjlGnEh71EH2xwfAqQbYGxQv3r0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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