Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8046697a6bf4d78c31050826fa73b304b6c2224ee980df0f4033dfb787eff04c' 
  AND token = 'qYRMIDvmrmOHUI9GqQND3MUCjG3l1pcVNTAK93ioo2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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