Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '7680406317381b1c9a2f9fd77f1a06cb1f5cec14bc11ce71ec7240cdf6e5619b' 
  AND token = 'xYJs2VjX+MwX6AIiRLQstqEzM7lZ71iwsqP1JEqUydQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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