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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4909e1de44a079f03a97cca5222d9a49ba62936826282b5811e40e8df41fc3e6' 
  AND token = 'wXzZeGKphuyPJnOKV0by2O4n1p6T/sRcnJ9qxOb0Odc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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