Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea204d7612c9a97f8e163c1df6ab0c99a143d19d4901cdd08b0d45ffef9b6409' 
  AND token = 'jw9O4JrAxra1EwCdsF2vxcE8t5fWjsN/N6WH/qodaRQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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