Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f119115ccccfb3fb168ac24342e0369ad4c01fdaa2666d049879a2abff44b70' 
  AND token = 's4kVagnen/JRGyhBae7qa8JHOFrtq2Xvix1ujo+r4mc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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