Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7ff74aecd8781143071650660e57139171be77aa2cc96634cbde952a4507c045' 
  AND token = 'Yc2Hksd+3Qb3spQ08maoh9xwPn7i8YePN3wN07a8roQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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