SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1772063c0f4651f9982b85433c975d95f414e8f6a34c21cb0b7bda7ceaed4f2e' 
  AND token = '5MXOIU6zPdhiRBOyoFZllMt1xw04z6PWYJHxO958aZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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