Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '5d741dcbdfa89a6f46931ecfb6ff584212767cc208b22183778dba640abf332b' 
  AND token = 'cJ0rd/isdxr8i4Fus8XWFCjHEx0pFxJFDRPF+XBAPCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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