Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'afb83e0f9416e74f3b5dc44dbadb57ec4995fc81d3cb866af313207732aa0d8a' 
  AND token = 'phos5I/mONWjrX7vsa7TIVQ1tsKtplG7UT4/lgUiDjo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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