Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd1ac886acfd43fab13143ef988a56ef010e936c5a1b1720a6b80d9eed029961' 
  AND token = '0c2jqNytZ7aCT2EfTpq7Bv3L9da4er/pii3nPD2Ssg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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