Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ac0454acba12b7063a106a570e22b93cb10edb3d87242cbd175666bea76e648' 
  AND token = 'R7ik40fJNfz0VVNpE/VcMi/Lr6M/weThTW/y7Uurf6w=' 
  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"
    }
  }
}