Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '95d4b651605684ed863838e83c776c5699a336a513ce17c6d3b7b42156ab54a3' 
  AND token = 'ftcWrlPwgwx3GyLWTc3O/mxzrvUhTv76qZcgnscCv1c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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