Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9621bac8a81916c624f4ed2f654e7358ee88441f20f4307616bc20df5936927d' 
  AND token = 'YJ30z7h66DaPop+0iS4wsslM3euSJLuiWol3KZ6w1hQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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