Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd5376c8899eb8b7338e50d8a7baa09a1972b7739f6b7af672db416c960405590' 
  AND token = 'xkim+fE+eH+5sXrTNT8t6s0iDwKh+BLpjwqTuvDT11c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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