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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd45099729a03af9e04a6771d99fd36497ce7264806091e95200f05ef217a05ef' 
  AND token = 'Wl0NEMv6Ip+15Qa2rvJFf6JfoK3BkYRUeVfjGlcDv7Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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