Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '588fd0aa0b84f5a93b92fe45f51bbbf9677c5414692dd23631a0add512c10a77' 
  AND token = 'ePeF5Hh0f/ct6UakouBrqvlQ7TIKRQa3cfhD+HwaLnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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