Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32e1bc9023d95709ed211f51eabb5c8fc100070cd98acec56363c0b179a13cd' 
  AND token = 'z9apTJQU99sGG6YIBPcRj73xXV7F8BEa+4ehhz6Kw18=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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