SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '022b9fecdf34540547876c6858c8467fb97b6e060d52cf3b9f02b4079b7f9226' 
  AND token = 'So3WUY8Lx0jT2KF/H+coc0lvUo0V/m+XqoAPjBn5VJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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