Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '990674fb39885c4268db615c52d851835884e5a4c3c9c072f74f3e00c7bbcf79' 
  AND token = 'GP5u2i3EoV3h5XeBPTtw2AYV5a51yXXhHLpLdddq2Ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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