Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b32771db9267d1897de7cc43e3bc5bea19039af37bb34985c3335486847c7df0' 
  AND token = 'byZfShJNTC03eIL+bat6j/h4hZ5Rk4weGyEoA0zf2a8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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