Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '57173d73d2dd2085d37f4753b6041750d0ec3ce735f1cefa1f69f87da40949e3' 
  AND token = 'Gw1RDVFalqjCTGRE7Ah3u2BMiLuRwicZ0GCTz5iZ8to=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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