Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b0262db32fc4110b796e11b556551595013477f7c86e47fe9da9161e914ca020' 
  AND token = '4MtNV+Qft58VIZygzQRkKe3X/l75rZfhl3ZnPbkuUbQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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