Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6eddb907118beb2f954e24b2da970f9dac7c8247cd523e798432428260d8876c' 
  AND token = 'Ws/0ZMHguSnvi1P2c0pkGp/+1urg0WGhm17GFEHpbV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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