SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ae6decd90b2165acbe1478429e9bd5a394bcd3d135324472650016001bf2f20f' 
  AND token = '+mg+FgcDqJYPAW9q9yvo99HeuX0Uhs9ZibTv5M92pw8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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