Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf63ea27a4791f9289c934f26bae588ed4e9e6d7f5c31731eba0ba618e77cb8f' 
  AND token = 'TawMwI4GqBm1m483C16iqrSOTM4YiT0O2BwwBUsAef0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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