Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2b0ad20c348f50c39e5d269db645438d03001c15e87c5cee11fb812b4c5640d0' 
  AND token = 'BA17vEY4OwoCHZnhtXOmXnnh8lb+WNFZ24UF2rEScdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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