SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bcb7b5a044f569373f7e47bd224e60a3bde8be7f15bd953c9afb9989f2583ecc' 
  AND token = '8ZQcJoXFB7KoRAt8OvgoonFyKGYMV4KSB+S1genu27o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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