Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80043c8777385a226b782ec3bc779b5de1cacbcb1a0251a2792a52f816739c4c' 
  AND token = 'aBwImpGg8irjLVlF2ggArziguttJO4X30cJMC18sfww=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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