Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5edeaaac673790a58bd103ad64254dba15d6b8fc8959741d174f0177f9385213' 
  AND token = 'y461jn9gRxgTkRhmlM2xCwaKB0zZKt2LAPu3gLCI5E0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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