SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1393db3892e81a602d3e75d6b32edabfbb0f1d17c26ef6d73e4f4d8262d25010' 
  AND token = '2NoDQoXVLvmgoPA2Gh7gVFo5XUK3Ga1i3jJGzNJpZB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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