Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20b2a4c2fec5db20ef5ef276e152a7a73e20f721870157620d45f54efcf78daa' 
  AND token = 'tgYamUWhXO47NwVEKnUEKV0jTQK3ll76vNoAiHbX6nw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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