Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c318decfa4e4489c4ff474a25965c949ce73c0ec10d20a934eca6e0db8d955a5' 
  AND token = 'lsuwtBkIKZfQrv80dblC83V41kPf8q1gQqDLCOljX/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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