Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7282be9c62cb6db12c700a8d259adbf234f35cd64829e47b4c908df212bf0afb' 
  AND token = 'bQbn2uznQlYwzPtvD9scPVa9n2s4zyYfPR8Mi9pUBaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}