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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '17c2fd65e730d988c91fdb6687e77394600edbc00618939dd3e6d0a756bcef3d' 
  AND token = 'jq5uQP+1HTb7zc8LWSK3sefwx1PpipVR+qGinMy2X3M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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