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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72bd1e8198b033d3516a5d664cb3ba717d88ad35c686377b0c432057ea520119' 
  AND token = '4euyLX6vE6Ozna/lnuPwjsqisdINqCvsqQn5sGWpebM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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