Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76431ef320c013f5527ee319c0030d917ebd1220ef91651189ed03c7ea132222' 
  AND token = 'rtAoYmQJidFgTE/kKm3zHSjTEW5Rs76kffhtpkDds5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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